Digital Signal Processing Reference
In-Depth Information
Non uniform grid for 6-bit Coefficient Quantization
1
0.8
0.6
0.4
0.2
2
2
2
2
2
2
2
0
-0.2
-0.4
-0.6
-0.8
-1
-1
-0.5
0
0.5
1
Real Part
Figure 3.29
Possible pole locations when the coefficients of the denominator of an SoS are quantized to
6-bit fixed-point numbers
+
+
x
[
n
]
x
rcos
θ
z
-1
-rsin
θ
x
x
rsin
θ
x
y[n]
x
rcos
θ
z
-1
Figure 3.30
Filter structure to place quantized pole-pair re
±j
y
at intersections of evenly placed
horizontal and vertical lines inside the unit circle
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